Power-operated valve.



Vigzzaasea:

PATENTED SEPT. 10, 1907'.

J. M. ANDERSEN.

POWER OPERATED VALVE.

APPLIOATION FILED 00122. 1901.

- 4 SHEETS-SHEET 1.

J. M. ANDERSBN.

POWER OPERATED VALVE.

APPLIOATION FILED OUT. 22, 1901.

Vii/265565.

PATENTEDSEPT. 10, 1907.

4 SHEETS-SHEET 2.

No. 865,556. PATENTED SEPT. 10, 1907. J. M. ANDERSEN.

POWER OPERATED VALVE.

AEPLIUATION FILED 00122. 1901.

4 SHEETSSHEET 3.

lu -J! W? lizaazzfaz 6 72619865 i I PATENTED SEPT. 10, 1907. J. M.ANDERSEN.

POWER OPERATED VALVE.

APPLIGATION ED 00122, 1901.

gag/265588. O 'W I E L TAT Joniuv u. Auniunsnu,

PATENT OFFICE.

or nosToN, MASSACHUSETTS, ssienon or ONE-HALF T0 ALBERT ANDERSON, OFBOSTON, MASSACHUSETTS.

POWER-OPERATED VALVE.

Specification of Letters Patent.

Patented Sept. 10, 1907.

Application filed October 22,1901. Serial No. 79,567.

To all whom it may concern:

Be it known that I, JOHAN M. ANDEnsEN, a citizen of the United States,residing in Boston, in the county of Suffolk and State of Massachusetts,have invented -an Improvement in Power-Operated Valves, of which thefollowing description, in connection with the accompanying drawings, isa specification, like letters on the drawings representing like parts.

This invention has for its object to provide mechanism with which areciprocating motion may be imparted to a driven member by a drivingmember having a rotary motion.

The invention is adapted among other uses, to be applied tosubstantially large size valves whereby the said valves may be operatedby power.

In the adaptation of the invention to a valve, the valve properconstitutes the reciprocating driven member, and an electric or othermotor constitutes the driving member, which latter may and preferablywill be connected with the said valve by means of mechanism havingprovision for preventing an excess of power or strain being applied tothe valve mechanism, when the valve has been brought into its opened orclosed position. Provision is also made for operating the valve by handin case of accident to the motor or for the purpose of completing themovement of the valve in either direction. Furthermore provision is madefor permitting the motor to be started in operation before it isoperatively connected with the valve, so as to avoid injuring the motorby starting the same with a full load. These and other features of thisinvention will be pointed-out in the claim at the end of thisspecification.

Figure 1 is a partial section and elevation of a sufficient portion ofan apparatus embodying this invention, to enable the same to beunderstood. Fig. 2, a section of the valve shown in Fig. 1, with thevalve stem in elevation. Fig. 3, a cross section on the line 3-3,Fig. 1. Fig. 4, a cross section on the line 4-4, Fig. 1. Fig. 5, adetail to be referred to and Fig. 6, a diagram of circuits to bereferred to.

In the present instance, the rotary driving member is represented as anelectric motor a, of any suitable type, and having its armature shaft bmade hollow and mounted to turn in suitable bearings c, d. Thereciprocating driven member is shown as a valve e of any suitable type,which reciprocates in a suitable casing f and is provided with a stem orrod 9, which in the present instance is fastened to its valve and movestherewith.

The valve stem or rod g is extended through the hollow shaft b and isconnected therewith to be driven thereby, by mechanism which may andpreferably will be of a construction as will now be described.

The hollow armature shaft b is provided at one end with a substantiallysmall pinion or gear h (see Fig. 1), which meshes with a gear or pinion11 fast on a shaft 3' supported in a boss it formed in a partition wallI of an inclosing casing A. The pinion or gear 11 meshes with aninternally toothed gear or ring m, revoluble within a disk or wheel nand confined therein by a ring 0 secured as by screws p to the flange orrim of the said wheel.- The internally toothed ring m is adapted to beturned within the flange of the disk or wheel 71., without producingmovement of the latter, under circum'stanccs as will be described, andis further adapted to be clutched or coupled thereto, by what I preferto designate as a slip joint, and for this purpose I have provided alever 7 pivoted at 8 to lugs or cars 9 on the disk or wheel n, andhaving its free end adapted to pass down through a slot in the rim orflange of the said disk or wheel a and enter a recess or pocket 10 inthe periphery of the internally toothed ring at (see Figs. 1 and 5). Thelever 7 is held in the recess or pocket 10, under normal conditions, bymeans of a spring 12 secured at one end to the disk or wheel 71. andhaving its other end attached'to an adjusting screw 13 extended throughthe lever 7.

In the present instance. I have provided a companion gear to the gear 2'and which is herein marked 14 and is located substantially diametricallyopposite to the gear 2', which gear 14 also engages the internallytoothed ring in. The disk or wheel a is provided with a hub 15 mountedon an internally threaded nut or sleeve 16, the said hub being providedon its interior with a substantially annular pocket 17 (see Fig. 3),into which extends a lug or projection 18 on the exterior of theinternally threaded nut or sleeve 16, the lug or projection 18cooperating with a like lug or projection 19 on the hub 15. i

The internally threaded nut or sleeve 16 engages with screw-threads 20on the valve stem or rod g. It will thus be seen that rotation of thehollow armature shaft will produce rotation of the internally threadednut or sleeve 16, through the pinion h, gear i, internally toothed ring771, clutch lever 7, disk or wheel n, projection 19 on the hub thereof,and the projection 18 on the internally threaded nut or sleeve 16.

Rotation of the internally threaded nut or sleeve 16 produces in thepresent construction longitudinal movement of the valve rod g and of thevalve e, the retation of the nut 16 in one direction moving the rod g soas to open the valve, and in the opposite direction so as to close thesame.

The pockets or recesses 10 in the periphery of the internally toothedring in are provided with bevel side walls as shown in Fig. 5, so thatwhen an excessive power is applied to the ring m or excessive strain isapplied to the valve and its operating parts, the said ring will movethe clutch lever 7 outward or against the action of the spring 12 so asto unlock the ring m from the disk or wheel n. As a result the motor aand the internally toothed ring or. may continue to revolve withoutproducing rotation of the disk or wheel u and consequently withoutproducing longitudinal movement of the valve. This construction isdesirable inasmuch as in actual practice it prevents injury to the valveor to the operating parts thereof.

The valve may also be closed manually, which may be accomplished asherein shown by means of a shaft 23 extended through the casing A andsupported in suitable hearings in a bracket 24 attached to the wall Iand provided with a bevel pinion 25, which meshes with a bevel pinion 26on the shai t j of the gear 1'.

The motor and the intermediate mechanism between the same and the valverod, may and preferably will be inclosed in the casing A, which may beof any suitable construction and preferably will be made in sections asrepresented in the drawings.

The motor a is provided with the usual commutator 27 and brushcs 28, andI prefer to also Lse a magnetic ally operated brake of any suitableconstruction.

The brake referred to, is herein shown represented as a pulley or sheave30 fast on the armature shaft b, and coiiperating levers 31, 32 pivotedas at 33, 34, the said levers having one end adapted to be attracted byan interposed magnet 35, which acts in opposition to a spring 36connected with the-opposite ends of the said levers.

The electro-magnet 35, when energized, attracts the short arms of thebrake levers and releases the armature shalt b, whereas when the currentis cut off from the magnet 35, the spring 36 operates, and engages thebrake levers with the sheave 30 to stop rotation of the armature andconsequently of the motor. The valve rod g is provided with alongitudinal key-way 38 into which extends the end of a lever 39, whichin the longitudinal movement of the valve rod 9 is adapted to be movedin opposite directions when the valve rod has reached the limit of itsmovement in said directions, and the said lever is designed to operate asuitable switch or switches,.as will be described which maybe of anysuitable construction, and which control the current flowing through thebrake magnet and through the motor.

Referring to Fig. 6, I have shown one arrangement of the electriccircuit which is controlled by the switch 39. In this arrangement theswitches 50, 51 are connected to the lever 39 by the rack bar 52 andlink 53, provided respectively with the slots 54, 55, the slot 54 havingextended into it a stud or pin 56 on the lever 39 I and the slot havingextended into it a stud or pin 57 on the rack ,bar 52. The rack bar 52is engaged by seg mental giars or toothed levers 58, which are connectedby a spring 59, the purpose of which is to move the switches fromengagemcntwith the terminals 60, 61, into engagement with the terminals61, 62 with a quick movement. The terminals 60, 62 are connected incircuit with the field coil 63 of the motor a by the wires 64, 65, andthe terminal 61 is connected by the wire 66 with a terminal 67 of adouble pole switch, the other terminal 68 of which is connected throughthe magnet 70 and resistance 71 with one end of the coil of the brakemagnet 35, the other end of which coil is connected by wire 72 with oneend of the field coil 63 of tater brushes 76, 77 of the motor a.

, season the motor a, the other end of which is connected as describedwith the terminals 60, 62. The switch levers 50, 51 are connected bywires 74, with the commu- The circuit of the motor is completed in thefirst instance by the switch 80 which is manually operated, the contactbar 81 connecting the terminals 67, 68 when the switch is closed. Thecircuit may be traced as follows, vizz-from the terminal 68, through themagnet 70, resistance 71, brake magnet 35, wire 72, field coil 63,thence by wire 64 to terminal 60, thence by switch lever 50, wire 74,brush 76, armature 82 of motor, brush 77, Wire 75, switch lever 5],terminal 61, wire 66, terminal 67 and armature or contact bar 81 to theterminal 68. When this circuit is manually completed as described, themagnet 70 holds the contact bar or armature 81 in engagement with theterminals 67, 68, until the circuit is interrupted by the movement ofthe switch levers 50, 51 from engagement with the terminals 60, 6]. intoengagement with the terminals 61, 62 and when this interruption takesplace, the armature or contact bar 81 is withdrawn by its spring 83,thus opening the circuit of the motor at the manually operated switch,and stopping the motor with the switch levers 50, 51 in contact with theterminals 61, 62.

As represented in Fig. 6, the lever 39 has been moved by the upper endof the slot 38 in the valve stem or rod g, which takes place when thevalve is closed. The

' switch levers 50, 51 are in the position they occupy to effectrotation of the armature 82 in such direction as will open the valve,and when the switch levers are in contact with the terminals 61, 62, thecurrent through the armature is reversed and it is revolved in theopposite direction to close the valve, the closing movement of the valveeffecting the movement of the switches 50, 51, so as to place them incontact with the terminals 60, 61, and thus into position to direct thecurrent I through the armature in such direction as will open the valvewhen the manually operated switch is closed.

In the operation of the apparatus as herein shown, the current is firstpassed through the brake magnet and then through the motor, so that thearmature may be released before the motor is set in operation, and therecessed hub 15 provided with the projection 19, which co6pcratcs withthe projection 18 on the internally threaded nut 16, provides for themotor attaining a certain speed before being loaded, as for instance,the motor is energized and set in operation without doing work until theprojection 19 engages the projection 18, and by means of the interposedgearing, the motor may attain a considerable speed before its rotationis effective upon the internally threaded nut 16.

The casing A may contain suitable oil guards 40, 41, (see Fig. 1), andif desired said casing may be provided with suitable openings by whichaccess may be had to the parts, or as herein shown, the casing may becomposed of sections.

From the above description, it will be seen, that the valve may beopened and closed by power, and that when broughtinto its opened orclosed position, the power may be automatically disconnected from thevalve by the clutch or slip joint above referred to, and further thepower may be automatically stopped.

I have herein shown my invention as applied to a valve having its stemor rod fast thereto to move longitudinally therewith, but I do notdesire to limit my invention in this respect, as it is equallyapplicable to those constructions of valves in which the valve rodrotates but does not move longitudinally, the rotation of the rodeffecting reciprocation of the valve.

Claim.

1. In an apparatus of theclass described, the combination with areciprocating valve provided with a rod or stem having screw-threads, ofa rotary motor having a hollow shaft into which said rod or stem isextended, and mechanism connecting said hollow shaft with said rod orstem and including an internally toothed ring driven from the hollowarmature shaft, a disk or wheel connected with the threaded valve rod orstem, and means to detachably clutch said wheel to said ring to permitautomatic disconnection of said valve from said motor, substantially asdescribed.

2. In an apparatus of the class described, the combination with areciprocating valve provided with a rod or stem having screw-threads, ofa rotary motor having a hollow shaft into which said rod or stem isextended, and mechanism connecting saldhollow shaft with said rod orstem and including an internally toothed ring drivenfrom the hollowarmature shaft and provided on it's periphery with a recess, a disk orwheel, and a spring-actuated lever carried by said disk or wheel andnormally extended into said recess to couple the said ring to said diskor wheel, substantially as described. r

3. In an apparatus of the class described, the combination .with a valveprovided with a stem or rod having a longitudinally extended key-way orslot, of an electric motor having a hollow armature shaft into whichsaid valve stem or rod is extended, mechanism for connecting said hollowshaft with said valve stem, and means for controlling said electricmotor extended into said key-way or slot and actuated by said stem orrod, substantially as described.

4. In an apparatus of the class described, the combination with areciprocating valve provided with a rod or stem having screw-threads, ofa rotary motor having a hollow shaft through which said rod or stem isextended, and mechanism exterior to said hollow shaft-for connecting itin engagement with said rod or stem, said mechanismconslsting of apinion on the hollow shaft, an internally toothed ring or gear, a gearor pinion connecting the pinion on the hollow shaft with said internallytoothed ring or gear, a disk or wheel within which said toothed ringrevolves, means to detachably clutch said disk or wheel to said toothedring, an internally threaded not or sleeve engaging said threaded stemor rod, and means for connecting said sleeve with said disk or wheel,substantially as described.

In testimony whereof, I have signed my name to this specification ln,thepresence of two subscribing witnesses.

' JOHAN M. ANDERSEN. Witnesses:

Jss. H. CHURCHILL, J. MURPHY.

